Weight-adjustable dumbbell component

Abstract

The present invention provides a weight-adjustable dumbbell component. The weight-adjustable dumbbell component includes a dumbbell base, dumbbell plates, and a dumbbell bar assembly; two ends of the dumbbell base are provided with abutting bumps fitted with inserting holes, limiting mechanisms are unlocked when the abutting bumps extend into the inserting holes, the limiting mechanisms are locked when the abutting bumps are separated from the inserting holes, and the limiting mechanisms are used for limiting relative rotation of a rotating shaft. The dumbbell plates are prevented from loosening during use, parts for unlocking the limiting mechanisms are arranged on the dumbbell base, thus the danger that the limiting mechanisms are unlocked due to improper use is effectively avoided.

1 . A weight-adjustable dumbbell component, comprising a dumbbell base, a plurality of dumbbell plates arranged on the dumbbell bases, and a dumbbell bar assembly for mounting the dumbbell plates, wherein the dumbbell bar assembly comprises a rotating shaft and a handle tube sleeved at the middle of the rotating shaft; an end face of the rotating shaft is in a large cut circle shape, and two ends of the rotating shaft are sequentially sleeved with the following parts:
 hollow inserting plates for fitting and fixing the dumbbell plates and symmetrically arranged at two sides of the handle tube, wherein the hollow inserting plates are provided with open grooves for assembling and disassembling the dumbbell plates; and   limiting mechanisms, for limiting rotation of the rotating shaft and arranged at outer sides of the hollow inserting plates, wherein inserting holes are formed at the peripheries of the limiting mechanisms, and abutting bumps fitted with the inserting holes are arranged at two ends of the dumbbell base;   wherein the limiting mechanisms are unlocked when the abutting bumps extend into the inserting holes, and various dumbbell plates are sequentially assembled on and disassembled from the hollow inserting plates through the rotation of the rotating shaft; and the limiting mechanisms are locked when the abutting bumps are separated from the inserting holes, and the limiting mechanisms are configured to limit relative rotation of the rotating shaft.   
     
     
         2 . The weight-adjustable dumbbell component according to  claim 1 , wherein the limiting mechanism comprises:
 a limiting disk, wherein a large cut circular hole is formed at the middle of the limiting disk, and the large cut circular hole is fitted with the end face of the rotating shaft in a shape and size; the limiting disk rotates synchronously with the rotating shaft, the limiting disk is arranged at the outer side of the corresponding hollow inserting plate and sleeved on the rotating shaft, and a plurality of clamping notches are formed at an outer edge of the limiting disk;   a hollow housing sleeved on the rotating shaft at an outer side of the limiting disk and spliced with the hollow inserting plate, wherein an inner side of the hollow housing comprises an annular cover plate, and an inner diameter of the annular cover plate is greater than an outer diameter of the limiting disk; the limiting disk is arranged at the interior of the hollow housing, and the inserting hole is formed at a bottom of the periphery of the hollow housing; and   a clamping block arranged at the interior of the hollow housing and fixedly connected to the interior of the hollow housing in a rotating shaft mode, wherein one end of the clamping block is spliced with one clamping notch on the limiting disk to limit the rotation.   
     
     
         3 . The weight-adjustable dumbbell component according to  claim 2 , wherein the limiting mechanism further comprises:
 a leaf spring, wherein one end of the leaf spring abuts against the interior of the hollow housing, and the other end of the leaf spring abuts against a lateral side of the clamping block; and   a transmission block arranged in the inserting hole, wherein an upper end of the transmission block abuts against the other end of the clamping block, and a lower end of the transmission block penetrates through the inserting hole to abut against the abutting bump.   
     
     
         4 . The weight-adjustable dumbbell component according to  claim 3 , wherein a plurality of connecting components are symmetrically arranged at two sides of the handle tube along an axis, and the plurality of connecting components are spirally arranged from the middle of the rotating shaft to the two ends of the rotating shaft at equal angles along the axis. 
     
     
         5 . The weight-adjustable dumbbell component according to  claim 4 , wherein each connecting component comprises a flat groove and a connecting portion, the flat groove corresponds to the connecting portion on the same shaft section, and the dumbbell plate is clamped to the connecting portion. 
     
     
         6 . The weight-adjustable dumbbell component according to  claim 5 , wherein a plurality of positioning holes are formed at a disk body of the limiting disk at equal diameters and equal angles, and arrangement angles of the positioning holes correspond to spiral arrangement angles of the connecting components of the rotating shaft. 
     
     
         7 . The weight-adjustable dumbbell component according to  claim 6 , wherein spring mounting holes are formed at the hollow housing, a spring is arranged in the spring mounting hole, one end of the spring abuts against the hole bottom of the corresponding spring mounting hole, and the other end of the spring is installed with halls; the balls are pressed on the positioning holes through an elastic action of the springs, and the balls are fitted with the positioning holes in positions and size; when the rotating shaft rotates to drive the limiting disk, to rotate, the balls slide on an outer side surface of the limiting disk in an arc line mode, and the balls are sequentially buckled to the plurality of positioning holes. 
     
     
         8 . The weight-adjustable dumbbell component according to  claim 6 , wherein the hollow inserting plate comprises a sleeve and baffles arranged at two ends of the sleeve; a plurality of spacers are equidistantly arranged at an outer side of the sleeve along, an axial direction, and a space between the baffles at the two ends are partitioned into a plurality of partition areas for placing the dumbbell plates by the plurality of spacers, and the open groove corresponds to the positions of the connecting components of the rotating shaft. 
     
     
         9 . The weight-adjustable dumbbell component according to  claim 8 , wherein the clamping notches comprise rotary limiting grooves for clamping one end of the clamping block, the limiting disk comprises a first cambered surface, and the rotary limiting grooves are arranged at a cambered outer edge of the first cambered surface. 
     
     
         10 . The weight-adjustable dumbbell component according to  claim 9 , wherein the limiting disk, further comprises a second, cambered surface, and the second cambered surface and the first cambered surface are concentric and unequal-diameter arc surfaces. 
     
     
         11 . The weight-adjustable dumbbell component according to  claim 10 , wherein the clamping notches further comprise stall limiting grooves for limiting rotating of the clamping block, and the stall limiting grooves are arranged at an outer edge of a cambered surface connecting side of the first cambered surface and the second cambered surface. 
     
     
         12 . The weight-adjustable dumbbell component according to  claim 11 , wherein a radius of curvature of the second cambered surface is greater than a radius of curvature of the first cambered surface. 
     
     
         13 . The weight-adjustable dumbbell component according to  claim 1 , wherein partition grooves for placing the dumbbell plates are formed at the dumbbell base, and the number of the partition grooves is consistent with the number of the dumbbell plates. 
     
     
         14 . The weight-adjustable dumbbell component according to  claim 2 , wherein the rotating shaft is further sleeved with rotary end covers, the rotary end covers are arranged at the outer sides of the hollow housings and fixedly connected to the rotating shaft; a large cut circular groove fitted with the end face of the rotating shaft in shape is arranged at an inner side of the rotary end cover, and the rotary end covers rotate synchronously with the rotating shaft.